Search for vulnerabilities
Vulnerability details: VCID-dtkn-4bxm-2qaj
Vulnerability ID VCID-dtkn-4bxm-2qaj
Aliases CVE-2021-20222
GHSA-2mq8-99q7-55wx
Summary Code injection in keycloak A flaw was found in keycloak. The new account console in keycloak can allow malicious code to be executed using the referrer URL. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
Status Published
Exploitability 0.5
Weighted Severity 8.0
Risk 4.0
Affected and Fixed Packages Package Details
Weaknesses (4)
CWE-20 Improper Input Validation
CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CWE-1035 OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities
CWE-937 OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities
System Score Found at
cvssv3 8.3 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-20222.json
cvssv3.1 8.3 https://access.redhat.com/security/cve/cve-2021-20222
generic_textual HIGH https://access.redhat.com/security/cve/cve-2021-20222
epss 0.00511 https://api.first.org/data/v1/epss?cve=CVE-2021-20222
epss 0.00511 https://api.first.org/data/v1/epss?cve=CVE-2021-20222
epss 0.00511 https://api.first.org/data/v1/epss?cve=CVE-2021-20222
epss 0.00511 https://api.first.org/data/v1/epss?cve=CVE-2021-20222
epss 0.00511 https://api.first.org/data/v1/epss?cve=CVE-2021-20222
epss 0.00511 https://api.first.org/data/v1/epss?cve=CVE-2021-20222
epss 0.00511 https://api.first.org/data/v1/epss?cve=CVE-2021-20222
epss 0.00511 https://api.first.org/data/v1/epss?cve=CVE-2021-20222
epss 0.00511 https://api.first.org/data/v1/epss?cve=CVE-2021-20222
epss 0.00511 https://api.first.org/data/v1/epss?cve=CVE-2021-20222
epss 0.00511 https://api.first.org/data/v1/epss?cve=CVE-2021-20222
epss 0.00511 https://api.first.org/data/v1/epss?cve=CVE-2021-20222
epss 0.00511 https://api.first.org/data/v1/epss?cve=CVE-2021-20222
epss 0.00511 https://api.first.org/data/v1/epss?cve=CVE-2021-20222
epss 0.00511 https://api.first.org/data/v1/epss?cve=CVE-2021-20222
epss 0.00511 https://api.first.org/data/v1/epss?cve=CVE-2021-20222
epss 0.00511 https://api.first.org/data/v1/epss?cve=CVE-2021-20222
epss 0.00511 https://api.first.org/data/v1/epss?cve=CVE-2021-20222
epss 0.00511 https://api.first.org/data/v1/epss?cve=CVE-2021-20222
cvssv3.1 8.3 https://bugzilla.redhat.com/show_bug.cgi?id=1924606
generic_textual HIGH https://bugzilla.redhat.com/show_bug.cgi?id=1924606
cvssv3.1_qr HIGH https://github.com/advisories/GHSA-2mq8-99q7-55wx
cvssv3.1 8.3 https://github.com/keycloak/keycloak/commit/3b80eee5bfdf2b80c47465c0f2eaf70074808741
generic_textual HIGH https://github.com/keycloak/keycloak/commit/3b80eee5bfdf2b80c47465c0f2eaf70074808741
cvssv2 5.1 https://nvd.nist.gov/vuln/detail/CVE-2021-20222
cvssv3.1 7.5 https://nvd.nist.gov/vuln/detail/CVE-2021-20222
cvssv3.1 8.3 https://nvd.nist.gov/vuln/detail/CVE-2021-20222
generic_textual HIGH https://nvd.nist.gov/vuln/detail/CVE-2021-20222
archlinux High https://security.archlinux.org/AVG-1926
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-20222.json
https://access.redhat.com/security/cve/cve-2021-20222
https://api.first.org/data/v1/epss?cve=CVE-2021-20222
https://bugzilla.redhat.com/show_bug.cgi?id=1924606
https://github.com/keycloak/keycloak/commit/3b80eee5bfdf2b80c47465c0f2eaf70074808741
https://nvd.nist.gov/vuln/detail/CVE-2021-20222
ASA-202105-6 https://security.archlinux.org/ASA-202105-6
AVG-1926 https://security.archlinux.org/AVG-1926
cpe:2.3:a:redhat:keycloak:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:redhat:keycloak:*:*:*:*:*:*:*:*
GHSA-2mq8-99q7-55wx https://github.com/advisories/GHSA-2mq8-99q7-55wx
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-20222.json
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H Found at https://access.redhat.com/security/cve/cve-2021-20222
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H Found at https://bugzilla.redhat.com/show_bug.cgi?id=1924606
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H Found at https://github.com/keycloak/keycloak/commit/3b80eee5bfdf2b80c47465c0f2eaf70074808741
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: AV:N/AC:H/Au:N/C:P/I:P/A:P Found at https://nvd.nist.gov/vuln/detail/CVE-2021-20222
Exploitability (E) Access Vector (AV) Access Complexity (AC) Authentication (Au) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

high

functional

unproven

proof_of_concept

not_defined

local

adjacent_network

network

high

medium

low

multiple

single

none

none

partial

complete

none

partial

complete

none

partial

complete
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2021-20222
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2021-20222
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Exploit Prediction Scoring System (EPSS)
Percentile 0.65422
EPSS Score 0.00511
Published At July 30, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-07-31T08:53:31.717551+00:00 GithubOSV Importer Import https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2021/05/GHSA-2mq8-99q7-55wx/GHSA-2mq8-99q7-55wx.json 37.0.0